Particle System Performance

Question

Situation

I created a particle system with JavaFX using the following technique:

Each particle is an ImageView that contains an image with a radial gradient:

The particle processing loop is an AnimationTimer in which the particle list is processed using the list stream () method. parallel (), it actually gives a boost to the whole system. Something like that:

loop = new AnimationTimer() {

    @Override
    public void handle(long now) {

        addParticle();

        // apply force: gravity
        allParticles.stream().parallel().forEach(Particle::applyForceGravity);

        // move particle
        allParticles.stream().parallel().forEach(Particle::move);

        // update position in fx scene
        allParticles.forEach(Particle::display);

        // remove all particles that aren't visible anymore
        removeDeadParticles();

    }
};

Particle color changes through ColorAdjust during its life cycle. I used the colors of fire for testing, something like this, which contains 1700 particles:

What I learned:

• Not using parallel () function slower
• Using Circle with transparency is slower than using ImageView
• Using blend mode is very slow
• PixelWriter . : ColorAdjust ( d3d )? JavaFX.

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Answer 1

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Answer 2

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// apply force: gravity
allParticles.stream().parallel().forEach(Particle::applyForceGravity);

// move particle
allParticles.stream().parallel().forEach(Particle::move);

:

allParticles.stream().parallel().forEach(particle -> {
  particle.applyForceGravity();
  particle.move();
});

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